FILE - In this Aug. 15, 2009 file photo, former NFL running back Herschel Walker, right, and Amanda Lyne are seen at a Strikeforce mixed martial arts event in San Jose, Calif. Walker is starting a new career in mixed martial arts, saying Monday, Sept. 21, 2009, that he has signed a multi-fight contract with promoter Strikeforce. Walker will begin a 12-week training camp next month in San Jose. The 1982 Heisman Trophy winner already holds a fifth-degree black belt in Tae Kwon Do. AP Photo logo AP Photo 3 months ago

FILE - In this Aug. 15, 2009 file photo, former NFL running back Herschel Walker, right, and Amanda Lyne are seen at a Strikeforce mixed martial arts event in San Jose, Calif. Walker is starting a new career in mixed martial arts, saying Monday, Sept. 21, 2009, that he has signed a multi-fight contract with promoter Strikeforce. Walker will begin a 12-week training camp next month in San Jose. The 1982 Heisman Trophy winner already holds a fifth-degree black belt in Tae Kwon Do.